Write code using the range function to add up the series 20, 30, 40, ... 90 and print the resulting sum each step along the way. Expected Output

3. bob is arguing that if you use output feedback (ofb) mode twice in a row to encrypt a long message, m, using the same key each time, it will be more secure. explain why bob is wrong, no matter what encryption algorithm he is using for block encryption (15 points).

Negative methods of behavior correction include all but this: sarcasm verbal abuse setting an example for proper behavior humiliation

State 7 common key's for every keyboard